Table 2.
Comparison of mean (SD) of hemodynamic responses in the studies groups.
| Variables | Time of measuring | Placebo | 1 μg/kg dose of nitroglycerin | 2 μg/kg dose of nitroglycerin | P value |
|---|---|---|---|---|---|
| Heart rate | Baseline | 79.23 (14.08) | 90.11 (14.17) | 82.84 (13.43) | 0.06 |
| Before endotracheal intubation | 83.38 (10.89) | 91.30 (20.72) | 87.61 (21.25) | 0.22 | |
| 1 minute after endotracheal intubation | 90.50 (14.15) | 91.38 (18.97) | 100.92 (17.92) | 0.058 | |
| 3 minutes after endotracheal intubation | 89.34 (0.7) | 91.00 (14.49) | 87.26 (91.94) | 0.7 | |
| 5 minutes after endotracheal intubation | 85.84 (12.11) | 83.46 (14.7) | 82.11 (16.26) | 0.64 | |
| 10 minutes after endotracheal intubation | 81 (11.01) | 77.92 (12.75) | 81.38 (13.08) | 0.54 | |
|
| |||||
| Systolic blood pressure | Baseline | 124.76 ± 9.25 | 124.50 ± 11.21 | 124.96 (8.99) | 0.98 |
| Before endotracheal intubation | 105.35 (19.39) | 104.08 (11.48) | 95.23 (16.12) | 0.53 | |
| 1 minute after endotracheal intubation | 129.92 (25.58) | 114.81 (15.46) | 110.77 (21.26) | 0.004∗ | |
| 3 minutes after endotracheal intubation | 124.27 (18.30) | 111.88 (15.91) | 109.62 (18.62) | 0.008∗ | |
| 5 minutes after endotracheal intubation | 118.62 (14.61) | 110.54 (18.55) | 105.65 (19.08) | 0.03∗ | |
| 10 minutes after endotracheal intubation | 115.68 (19.46) | 116.04 (19.030 | 108.15 (23.74) | 0.26 | |
|
| |||||
| Diastolic blood pressure | Baseline | 80.53 ± 7.15 | 79.30 ± 10.57 | 81.08 ± 11.40 | 0.8 |
| Before endotracheal intubation | 66.23 ± 16.33 | 62.80 ± 10.60 | 58.11 ± 13.59 | 0.1 | |
| 1 minute after endotracheal intubation | 86.69 ± 15.96 | 89.92 ± 14.76 | 71.23 ± 20.03 | 0.001∗ | |
| 3 minutes after endotracheal intubation | 82.76 ± 12.74 | 70.53 ± 16.71 | 67.46 ± 15.25 | 0.001∗ | |
| 5 minutes after endotracheal intubation | 78.19 ± 15.66 | 67.34 ± 13.95 | 64.46 ± 15.93 | 0.004∗ | |
| 10 minutes after endotracheal intubation | 74.96 ± 16.74 | 70.53 ± 11.58 | 69.69 ± 13.18 | 0.39 | |
|
| |||||
| Mean arterial pressure | Baseline | 95.34 ± 10.03 | 96.03 ± 11.83 | 94.75 ± 10.71 | 0.88 |
| Before endotracheal intubation | 79.61 ± 17.42 | 78.52 ± 10.34 | 72.11 ± 13.19) | 0.12 | |
| 1 minute after endotracheal intubation | 101.77 ± 19.63 | 86.38 ± 14.35 | 85.53 ± 18.9 | 0.002∗ | |
| 3 minutes after endotracheal intubation | 96.38 ± 13.24 | 90.46 ± 25.66 | 83.15 ± 16.40 | 0.049∗ | |
| 5 minutes after endotracheal intubation | 91.91 ± 13.68 | 81.92 ± 4.98 | 78.62 ± 17.81 | 0.008∗ | |
| 10 minutes after endotracheal intubation | 86.61 ± 11.01 | 86.46 ± 13.21 | 84.96 ± 12.34 | 0.49 | |